Gabriela and her mother sell sweatshirts for $25 and tie dyed T-shirts for $10.50. They are positive more than 10 T-shirts and at least 2 sweatshirts will be sold this weekend. If they want to make at least $400, which system could be used to
determine the possible numbers of sweatshirts (s) and T-shirts (1) they would need to sell?

Antonio made a scale model of a building. the model's scale is 1 inch to 235 feet and its height is 3.5 inches. what is the exact height of the actual building? enter your answer in the box.

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 5x^2 + 10x

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.