Answer:
Her mother will donate $11.20
Step-by-step explanation:
Step 1: Figure out how many 0.75 increments are in 21 miles.
21 ÷ 0.75 = 28
Step 2: Multiply 28 by $0.40
28 * $0.40 = $11.20
22.5 in^2
h = 3 in
base 1 = 6 in
base 2 = 9 in
So plug in
A = 1/2 (3) (6 + 9)
A = 3/2 (15)
A = 22.5 in^2
