Need help! MATH QUESTION!! 1.) How many solutions does 2x = 4 have? Explain.

2.) Is “ x = 7” a solution to the equation below? Explain in detail how you know. Use words, or diagrams, in addition to calculations. x - 4 = 3

3.) Are there any other solutions? How do you know?

Ascientist places 24 cells in a petri dish. she knows the cells grow at an exponential rate, doubling in number every hour. how long will it take (in hours) for there to be 1100 cells in the dish? time to 1100 cells: 5.51832530 hours how long will it take to reach 110 cells? time to 110 cells : 2.1963972 hours what is the average rate of change in the number of cells between 9 hours and 11 hours? average rate of change: cells per hour what is the instantaneous rate of change after 7 hours? instantaneous rate of change: cells per hour note: you can earn partial credit on this problem.

What is the foctored form of 9x²+7x+3?

Find the circumference of each circle. use 3.14 for . 15 cm 6 yd 2 m 13 ft. find the area of each circle. use 3.14 for t. 26 m 15 ft. 19 yd. 7.5 mm