temperature started at 39° F if the temperature went down 5° F & then up 7° F what is the temperature difference relative to the low temperature?

Two times a number plus three times another number equals 4. three times the first number plus four times the other number is 7. find the numbers

True or false: the graph of y=f(bx) is a horizontal compression of the graph y=f(x) if b< 1

Katie wants to collect over 100 seashells. she already has 34 seashells in her collection. each day, she finds 12 more seashells on the beach. katie can use fractions of days to find seashells. write an inequality to determine the number of days, dd, it will take katie to collect over 100 seashells.