a. 10 yd.×3 yd.=30 square yards;
b. 15 ft.×18 ft.=279 square feets;
c. 13 yd.=13×3 ft.=39 ft.=39×12 in.=468 in., 2 ft. 6 in.=2×12+6 in.=30 in., then 13 yd. 2 ft. 6 in.×15=498 in. × 15=7470 in.;
d. 198 sq. yd.=198 ×9 sq. ft.=1782 sq. ft.
198 sq. yd. 8 sq. ft. =1782+8 sq. ft.=1790 sq. ft.
Then 1790 sq. ft. × 7=12530 sq. ft.
To solve these problems, we just need to multiply or divide.
To solve problem c and d, we need to transform all units to the same, and then operate.a.
To solve this one, we need to transform all lengths to yards. We know that 1 yard equals 3 feet and 1 feet equals 12 inches. So,
y = - 6
given the point (- 2, y) lies on the graph then it is a solution of it's equation.
substitute x = - 2 into the equation for value of y
y = 3(- 2) = 3 × - 2 = - 6
the point on the graph is (- 2, 6)