HEEELLLPPP ASAP PLS If $12,000.00 is invested at 8% annual simple interest, how long does it take to be worth $37,920.00.

It will take
years (round to the nearest whole)

About 3 years

Step-by-step explanation:

8% in decimal form is just moving the decimal place of 8 two places over to the left and adding. So 8 turns into 0.08, add the 1, and that gives you 1.08.

Multiply that 1.08 by the money initial money, 12,000, and put an x next to the 1.08 in parentheses to symbolize the unknown amount of time in years. We're looking for the number (x) that will make our equation equal 37,920 so we will make our equation equal that.

37920 = 12000(1.08x)

To get the x alone, divide both sides by 12000. This cancels out the 12000 on the right side which leaves the x by itself

= (1.08x)

3.16 = 1.08x

Divide by 1.08 on both sides to cancel 1.08 out to leave the x by itself

=

2.9 = x

Round the 2.9 up like instructed and that makes it 3 years.

cant

step-by-step explanation: there is no picture

hello!

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.