Danny wants to join the gym. Gym A charges a $20 fee and $40 monthly charges. Gym B charges no joining fee and $45 monthly charges. Find the number of months it will take for the total cost for both gyms to be equal

it will take 4 months for the total cost for both gyms to be equal.

Step-by-step explanation:

Let x represent the number of months it will take for the total cost for both gyms to be equal.

Gym A charges a $20 fee and $40 monthly charges. It means that the cost of using gym A for x months is

40x + 20

Gym B charges no joining fee and $45 monthly charges. It means that the cost of using gym B for x months is

45x

For the cost of both gyms to be the same, the number of months would be

45x = 40x + 20

45x - 40x = 20

5x = 20

x = 20/5

x = 4

answer: d. $20

step-by-step explanation:

just took the test

answer: the answer is (b) amie should have multiplied

step-by-step explanation: given a sphere and a cylinder with same radius and height.

let, 'r' be the radius of the cylinder and sphere and 'h' be the height of the cylinder. according to the question,

r = h.

now, the volume of the sphere will be

and the volume of the cylinder will be

therefore, we have

thus, ammie should have multiplied the volume of the sphere