Question

p = $14,300
r = 7 1/2%
t = 4

What is i?

Answer 1

find the interest?

Answer 2

1.) Let x be the number. Two-thirds of this number is (2/3)x and 9 subtracted from it is (2/3)x - 9. This is equal to 7. Solve for x.

(2/3)x - 9 = 7 (add 7 to both sides)
(2/3)x = 16 (multiply both sides by 3/2)
x = 24 <===

2.) The formula for the circumference of a circle is 2pi(r), where r is the radius. Solve for r.

C = 2pi(r)
132 = 2(22/7)r
132 = (44/7)r
21 = r
The radius is 21 yards.

3.) Let p be the cost of a pound of potatoes, a be the cost of a pound of apples, and o be the cost of a pound of onions (in cents). Make a system of equations:

9p = 6a (nine pounds of potatoes is the same as six pounds of apples)
p = 2o (one pound of potatoes is twice as much as a pound of onions)
a = o + 24 (a pound of apples costs 24 cents more than a pound of onions)

Solve the system by substitution.

9p = 6a (substitute 2o for p and o + 24 for a)
9(2o) = 6(o + 24)
18o = 6o + 144
12o = 144
o = 12

a = o + 24 = 12 + 24 = 36

p = 2o = 2(12) = 24

A pound of apples costs 36 cents, a pound of onions costs 12 cents, and a pound of potatoes costs 24 cents.

4.) Use the simple interest formula I = Prt = 14300(0.075)(4) = $4290.

Answer 3

formula is I=(p)(r)(t)

Answer 4

simple or compound interest?

Answer 5

Oh so all I do is multiply p r and t? @Philippians413

Answer 6

s

Answer 7

yea if it is simple interest that is a simple interest formula that answer should come out as 4,290

Answer 8

Okay thanks but what is the formula to get p? its on a different question

Answer 9

p=i/(r)(t) is the formula for finding the principle

Answer 10

Okay thanks so much for the help :)

Answer 11

no problem