Seven times a number minus the number is -48. find the number.

a. the number is -8
b. the number is 8
c. the number is 6

Can someone me with #s 8, 9, and 11. with just one of the three also works. prove using only trig identities.

The graph of y=x3 is transformed as shown in the graph below. which equation represents the transformed function?

Titus works at a hotel. part of his job is to keep the complimentary pitcher of water at least half full and always with ice. when he starts his shift, the water level shows 4 gallons, or 128 cups of water. as the shift progresses, he records the level of the water every 10 minutes. after 2 hours, he uses a regression calculator to compute an equation for the decrease in water. his equation is w –0.414t + 129.549, where t is the number of minutes and w is the level of water. according to the equation, after about how many minutes would the water level be less than or equal to 64 cups?