Rachel is getting a sundae where the cost is proportional to the weight of the sundae she makes. Last time Rachel went she bought a 12-ounce sundae for $4.20. This time she buys a 17-ounce sundae. Let c be the cost of the sundae. Set up and solve a proportion for c.

Anyone know? will mark brainliest if correct!

The school that imani goes to is selling tickets to the annual dance competition. on the first day of the ticket sales the school sold 7 adult tickets and 5 child tickets for a total of $96. the school took in $40 on the second day by seling 3 adult tickets . find the price of an adult ticket and the price of a child ticket. solve by using substitution elimination college prep algebra math heres the 2 equations i came up with 7x+5y=96 and 3x+2y= -40 show all workiv be stuck on this.

What is the range of the function? f(x)=-2|x+1|? a. all real numbers. b. all real numbers less than or equal to 0. c. all real numbers less than or equal to 1. d. all real numbers greater than or equal to 1