It used to take Anna 45 seconds to swim 50 meters. Now she swims the same distance in 35 seconds. What is the percent increase in her speed, rounded to the nearest whole percent?

Rectangle bcde is similar to rectangle vwxy. what is the length of side vy? a) 1 7 b) 2 7 c) 3 7 d) 4 7

Aculture started with 4,000 bacteria. after 5 hours, it grew to 5,200 bacteria. predict how many bacteria will be present after 19 hours. round your answer to the nearest whole number.

Which of the following shows the graph of y=2e^x?