Answer:
129 m/s^2
Step-by-step explanation:
The length of a rectangle is increasing at a rate of 9m/s
dL/dt = 9m/s
The width is increasing at a rate of 7m/s
dw/dt= 7m/s
The formular for solving the area of a rectangle is length × width
Therefore, to calculate how fast the rectangle is increasing we will apply the product rule
dA/dt= L × dw/dt + W × dl/dt
= 12×7 + 5×9
= 84+45
= 129m/s^2
Hence the area of the rectangle is increasing at 129m/s^2
f(x) = 4x - 18
f(-3) - <em>put x = -3 to the equation of the function</em>
f(-3) = 4(-3) - 18 = -12 - 18 = -30
<h3>Answer: (-3, -30).</h3>
f(x) = -46
We have the equation:
4x - 18 = -46 <em>add 18 to both sides</em>
4x = -28 <em>divide both sides by 4</em>
x = -7
<h3>Answer: (-7, -46)</h3>
Answer:
120
Step-by-step explanation:
Each time you add 40 to gas(oz)
5/18 ÷ 2/6
5/18 * 6/2
30/36
5/6
Answer:
128
Step-by-step explanation:
160 x .20 = 32
160 - 32 = 128