Investment problems

p=$300
r=7%
t=2

what is i?

a)$4.20

b)$42.00

c)$420.00

B

Step-by-step explanation:

This is a simple interest problem. The formula for simple interest is:

Where

i is the interest amount

P is the principal amount

r is the rate of interest

t is the time in years

Given P, r, and t, we need to find convert r (as a percentage) to a decimal. We simply divide by 100. Shown below:

r = 7% = 7/100 = 0.07

Now, we substitute into formula and find i (interest):

Correct answer is B, $42

its a trick question

step-by-step explanation:

dogs love water, just turn on the hose and it will run in circles chasing the water all day : )

second option

step-by-step explanation:

the measures of a triangle equal 180. use that to find x.

2x+3x+4x=180

9x=180

9x/9=180/9

x=20

now you know x, you know angle a is 40°, angle b is 60°, angle c is 80°.

because angle a is 40°, the first option doesn't work.

because angle b is 60°, the second option does work.

when you add angle a and b, you get 100°. complementary means it equals 90°, so the third option doesn't work.

when you add angle a and c, you get 120°, which is not 100.