1 point Find the absolute value of (−7) + (+1) + (+3) + (−2) + (−2) + (−3) + 1 + 2.

1 point A piece of 16-gauge steel has been cut into the shape of a trapezoid with height 14.0 cm. and bases 23.0 cm. and 29.0 cm. What is the area of the trapezoidal piece of steel (in cm2)? (Use the rules for working measurements to give your answer to the appropriate accuracy and/or precision.)

1 point A circular hole is to be made on the side of a metal wall.  If the area of the hole is to be 90.0 , what must the radius be?  Use the rules for working with measurements to give your answer to the appropriate accuracy and/or precision.

2 points In the mid-20th century, engineers constructed a series of canals to move irrigation water from water sources to farming communities throughout the western United States. The volume of water a canal can move is partially dependent on its cross-sectional area. Suppose a canal is trapezoidal, 25.0 ft across the top and 15.0 ft across the bottom, with a planned depth of water of 10.0 ft as shown in the figure. Find the cross-sectional area of the canal when it is full (in ft2). (Use the rules for working with measurements give your answer to the appropriate accuracy and/or precision.)

1 point Find the slope m of the line  25 =

1 point Find the distance AC across the river shown in the figure below.   (Round your answer to three significant digits.)

1 point Classify the angle as acute, right, or obtuse.

2 points For the right circular cone shown below, find its volume (in cm3) and the lateral surface area (in cm2). Use the rules for working measurements to give your answer to the appropriate accuracy and/or precision.  

1 point A piece of 16-gauge steel has been cut into the shape of a trapezoid with height 12.0 in. and bases 25.0 in. and 27.0 in. What is the area of the trapezoidal piece of steel (in in2)? (Use the rules for working measurements to give your answer to the appropriate accuracy and/or precision.)

1 point Divide.