Answer:
-8?
Step-by-step explanation:
This is easy onystly I think you should do it your self but the answer is number b
Answer:
$2.22
Step-by-step explanation:
3 ft = 1 yd, so (3ft)^2 = (1yd)^2. Thus, 1 yd^2 = 9 ft^2
$20 / 1yd^2 = ($20 / 1yd^2)(1yd^2 / 9ft^2) = <u>$2.22 per square foot</u>
<u />
^ = to the power of...
yd = yard
ft = foot
(-9a - 20c) - (-15a + 3c) - (-22a - 7c)
= -9a - 20c + 15a - 3c + 22a + 7c
= (-9a + 15a + 22a) + (-20c - 3c + 7c)
= 28a - 16c
14-6+5
13
13 is the required answer
