What is the value of the expression –5x4 when x = –2?

a.
–40

b.
40

c.
80

d.
–80

i think its d. -80?

22. catie is starting a babysitting business. she spent $26 to make signs to advertise. she charges an initial fee of $5 and then $3 for each hour of service. write and solve an inequality to find the number of hours she will have to babysit to make a profit. interpret the solution.!