A colony of Insects doubles every day. If the colony has 5 insects today, How many will be present in 20 days? *
a.1310720
b. 2621440
c. 5242880
d. 10485760

Haruka hiked several kilometers in the morning. she hiked only 66 kilometers in the afternoon, which was 25% less than she had hiked in the morning. how many kilometers did haruka hike in all?

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.

3x + 4y = 5 x- 3y = -7 solve by substitution