Answer:
2 x 20 + 2 x 15 = 40 + 30 = 70
Step-by-step explanation:
2x20=40
2x15=30
40+30=7
The answer is option 4. 15% off means the price is 100-15%=85% of the original price.
Answer:
the height of the rock 3.2 seconds after it is propelled
Step-by-step explanation:
<u><em>The complete question is</em></u>
The function h(t) = –16t2 + 28t + 500 represents the height of a rock t seconds after it is propelled by a slingshot
Let
t------> the time in seconds
h----> the the height of a rock after it is propelled by a slingshot in meters
we know that

For 
Find the value of h(t)

therefore
h(3.2) represent the height of the rock
seconds after it is propelled
see the attached figure to better understand the problem
Answer:
y=2x-1
Step-by-step explanation:
If you are supposed to write the equation in slope-intercept format, (y=mx+b), then y=2x-1 would be the answer. 2 is the slope(m), and -1 is the y-intercept(b). I hope thus helped :).