Katrina is going to order sweatshirst for her girls mentoring group. The sweatshirts will have the group logo printed on the front. Katrina asks two local companies to gives he a price.
. MH Designs will charge $21.50 for each sweatshirt.
. Print Rich will charge $18 for each sweatshirt plus a one-time setup cost of $70
Justify how to determine the number of sweatshirst Katrina would need to order form each companny for the cost to be the same.

Given the function f(x) = log base 4(x+8) , find the value of f^-1(2)

Marco is studying a type of mold that grows at a fast rate. he created the function f(x) = 345(1.30)x to model the number of mold spores per week. what does the 1.30 represent? how many mold spores are there after 4 weeks? round your answer to the nearest whole number. 1.30 represents the number of mold spores marco had at the beginning of the study; 985 mold spores 1.30 represents the number of mold spores grown in a given week; 448 mold spores 1.30 represents the 30% rate of weekly growth; 345 mold spores 1.30 represents the 30% rate of weekly growth; 985 mold spores

Which exponential function has an initial value of 2? f(x) = 2(3x) f(x) = 3(2x)