Sam earns 1% interest on the money he has in a savings account. his dad plans to borrow money from the bank where sam keeps his money. his dad will have to pay 5% interest on the money he borrows. based on this information, which sentence is true?
group of answer choices

banks make money available to borrowers so people can pay for things they need.

banks base the amount of interest they charge on what people are willing to pay.

banks charge a lower rate for money borrowed than for money deposited.

banks earn money on the difference between what they charge to borrow money and what it pays in interest.

Banks earn money on the difference between what they charge to borrow money and what it pays in interest.

Step-by-step explanation:

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step-by-step explanation:

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to begin with, we're given that on earth, a rock weighs 20 pounds, and while on jupiter, that same rock weighs 42 pounds. now, we're trying to find the weight of a rock that weighs 10.5 pounds on earth, on jupiter.

to solve this, first, set up a proportion, cross-multiply, and solve it algebraically.

setting up the proportion is the hardest and the most confusing part of the problem, but it's simple.

if on earth, the rock weighs 20 lbs, and on jupiter it weighs 42 lbs, our first part of our proportion is 20/42 lbs. the second part has to be equal to each other. this means that 10.5 has to be on the numerator of the fraction, and x, the value we're trying to find, has to be on the denominator. remember that the rock weighs 10.5 lbs on earth, and we're trying to find the weight of it on jupiter (which is x).

20/42 = 10.5/x

next, you would cross-multiply.

20x = 42(10.5)

20x = 441

now, solve it algebraically by using division.

x = 22.05 lbs

this can be rounded to 22.1 lbs.

therefore, the weight of the rock on jupiter is 22.1 lbs, the fourth choice.