Step-by-step explanation:
the formula for volume of a cylinder is :

r=d/2
r = 7/2
h= 10
v= 22/7×7/2×10
v= 110cm³
E(x) = A(x) - S(x) = 2400x + 40x^2 - (250x + 500) = 2400x + 40x^2 - 250x - 500 = 40x^2 + 2150x - 500
Ashton's expenses for 3 years E(3) = 40(3)^2 + 2150(3) - 500 = 40(9) + 6450 - 500 = 360 + 5950 = $6,310
<span>(3 x 1000) + (16 x 10) + (7 x 1) = 3167. In standard form, this is 3.167 x 10^3. </span>
Ax + bx = 21
factor out x
x(a + b) = 21
x = 21/(a+b)
Answer:
-1,3
Step-by-step explanation: