A bank loaned out $23,500, part of it at the rate of 15% annual interest, and the rest at 4% annual interest. The total interest earned for both loans was $2,975.00. How much was loaned at each rate?

If the diameter of a microscope's field is 0.12mm, how wide is an object that fills one-quarter of the field?  (Explain how you've reached your answer.)

I will tell you your answer if you tell me mine first. You can claim 40 points, just go to my page and write your answer + explanation.

Step-by-step explanation:

c. y = 1/4 x + 5

step-by-step explanation:

first, put the equation of the line on the graph into slope-intercept form

(y = mx + b):   y = -4x + 8

second, a perpendicular line has to have "an opposite/reciprocal slope" to the original slope. so, find the "m" value in your original equation (it's -4, right? )

original slope: m = -4   perpendicular slope: change the sign to its opposite and find the reciprocal ("flip" the number)

new slope is now positive (b/c the original slope was negative 4), and it's 1/4 (not the original slope of 4 or 4/1)