Will give brainliest to best answer!

A population of y coyotes in a national park triples every year for 20 years. The function y = 13(3)^x represents the population, where x is the number of 20-year periods.

Part A: Graph the function.

Part B: Describe the domain and
range in context to the problem.

Part C: Find and interpret the
y-intercept.

Part D: How many coyotes are in the
national park in 40 years?

According to a research study, parents with young children slept 6.4 hours each night last year, on average. a random sample of 18 parents with young children was surveyed and the mean amount of time per night each parent slept was 6.8. this data has a sample standard deviation of 0.9. (assume that the scores are normally distributed.) researchers conduct a one-mean hypothesis at the 5% significance level, to test if the mean amount of time parents with young children sleep per night is greater than the mean amount of time last year. the null and alternative hypotheses are h0: μ=6.4 and ha: μ> 6.4, which is a right-tailed test. the test statistic is determined to be t0=1.89 using the partial t-table below, determine the critical value(s). if there is only one critical value, leave the second answer box blank.