​Two families went to Rollercoaster World. The Brown family paid $170 for 3 children and 2 adults. The Peckham family paid $360 for 4 children and 6 adults. If​ x​ is the price of a child’s ticket in dollars and ​y ​is the price of an adult’s ticket in dollars, write a system of equations that models this situation.

The fraction of defective integrated circuits produced in a photolithography process is being studied. a random sample of 300 circuits is tested, revealing 17 defectives. (a) calculate a 95% two-sided confidence interval on the fraction of defective circuits produced by this particular tool. round the answers to 4 decimal places. less-than-or-equal-to p less-than-or-equal-to (b) calculate a 95% upper confidence bound on the fraction of defective circuits. round the answer to 4 decimal places. p less-than-or-equal-to

In the sixth grade 13 out of 20 students have a dog if there are 152 sixth grade students how many of them have a dog

Atown has a population of 12000 and grows at 3.5% every year. what will be the population after 7 years, to the nearest whole number?