Fast robert has $18 to spend on ring tones for his new cell phone. each ring tone costs $1.95 to download. by rounding the cost of the ring tones to the nearest whole dollar, estimate the number of tones he can download.

a. 7

b. 9

c. 11

d. 13

Easy points boii. read it. ya. fresh

11. a particular type of cell doubles in number every hour. which function can be used to find the number of cells present at the end of h hours if there are initially 4 of these cells? a. n = 4 ()" b. n = 4(2)" c. n = 4 + (2)" din = 4 +"

Which of the expressions (on the photo document i inserted) together represent all solutions to the following equation? 8cos(12x)+4=-4 *the answer should be in degrees.* > i would like for someone to explain the process to find the solutions for this.