Question

A scientist is studying bacteria in a dish and discovered they grow and can 3 be tracked using the formula: 5*(1.50)^x +10, where x represents every hour. How many bacteria will there be after 9 hours? (Round Your Answer To The Nearest Whole Number)

A) 38
B) 48
C) 192
D) 202​

Answer 1

D) 202

Steps:

Formula 5*(1.50)^x + 10

1. Plug in 9 for x
5*(1.50)^9 +10

2. Solve exponents (38.443359375) and round to nearest hundredth
5*38.44+10

3. Multiply
192.2 +10

4. Add
202.2

5. Round to nearest whole number
202

Answer 2

D

Explanation:

if x= number of hours replace the x by 9

so you have 5×(1.50)^9+10=

5×(192.21)+10 = 202.21 so 202 will be nearest whole number