The diameter of a u. s penny is 3/4 inch. how many pennies would it take to make a row 42 inches long

Line cd passes through points c(1, 3) and d(4, –3). if the equation of the line is written in slope-intercept form, y = mx + b, what is the value of b? –5 –2 1 5

Question: what is the value of x 4x-2= (-7) +5x. it would be greatly appreciated if someone could actually explain to me step by step

Which of the following expressions is equal to 2x^2+8