How do you figure out the percent of change in a increase or decrease problem?

A group of friends went on a three-day hike. During the second day of the hike, the group hiked twice as far as they did on the first day. On the third day, they hiked twelve miles farther than combined distance of the first two days.

yoanna has $240 in her saving account and she deposits $20 each week. matt has $600 in his saving account ans withdraws $40 each week. how many weeks will it take until they have the same amount of money

How to write 25.784 in expanded form

What is 7+7/7 to the power of ten

The function A (b) relates the area of a trapezoid with a given height of 10 and one base length of 7 with the length of its other base. It takes as input the other base value, and returns as output the area of the trapezoid.

Jose must plant 380 trees. In the past 7 days Jose planted 266 trees. If he continues at this rate, how many more days will it take him to plant all the trees?

Suppose an experimenter wishes to evaluate the reliability of two weighing scales, by measuring a known 50-gram mass three times on each scale, and comparing the results. Scale A gives measurements of 49.8, 50.0 and 50.2 grams.

A zoo had 2250 visitors on Friday and 4725 on Saturday. What was the percent of increase of the number of visitors on Saturday over Friday? 110% 148% 152% 210%

A bar graph in which the bars are arranged in frequency order is a. a. dotplot. b. pie chart. c. line chart. d. pareto chart.

If A = 254.34 square feet, what is r?