Evaluate the geometric series 1 – 2+4 – 8, ..., n = 8

y=3n + 1

step-by-step explanation:

this is wrong because it says the second number is one less and i added one instead

yes the total will be same because in both of them the expression.is rearranged but their sign remains the same hence it hss just been shuffled

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)