If $7 - 4x = 15$, what is the value of $8x + 2$?

Consider the function represented by the equation 1/2 j + 1/4 k equals 3 which shows the equation written in function notation with j as the independent variable

Ineed with angles and the measure of them i have abc a is 65 and b is (3x-10) and c is (2x) find the value of x

Which equation can be used to measure the density of water in a spherical water tank? let w represent the number of water particles within the region.