Liam is saving up for a new cell phone. He uses the equation P= I + HB, where P is the cost
of the phone, I is the amount of money he started with, H is the number of hours he
babysits, and B is his hourly rate for babysitting. Which expression is equal to H, the number
of hours Liam will need to babysit to save enough money for a cell phone?

Step-by-step explanation:

Given the expression: P= I + HB

Where:

We want to find an expression for H, the number  of hours Liam will need to babysit to save enough money for a cell phone.

Our goal is to isolate the variable H in the expression P= I + HB.

P= I + HB

Subtract I from both sides

P-I=I-I+HB

HB=P-I

Divide both sides by B

7 weeks

step-by-step explanation:

convert each fraction to the least common multiple of 20, so 3/4 = 15/20 & 1/10 = 2/20, then divide 15 by 2 and you get a little over 7, so the food will last 7 weeks.

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