From 1960 to 1980, the consumer price index (cpi) increased from 29.6 to
82.4. if a pound of grapes cost $0.14 in 1960 and the price of grapes
increased at the same rate as the cpi from 1960 to 1980, by approximately
how much did the price of a pound of grapes increase from 1960 to 1980?

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 4x^2 - 19x- 5

I’ve been trying all day to figure this puzzle out. i need the work for it aswell. it is a factoring polynomials tarsia. the image is below.

Suppose you are choosing a 6-digit personal access code. this code is made up of 4 digits chosen from 1 to 9, followed by 2 letters chosen from a to z. any of these digits or letters can be repeated. find the total number of personal access codes that can be formed. 492,804 341,172 39,917,124 4,435,236