Which of the following equations has an infinite number of
solutions?
3(2x+1)=2(1+3x)+1
3(2x+1)=2(1+3x)-1
3(2x-1)=2(1+3x)-1
3(2x+1)=2(3+2x)-3

What is the area of triangle abc if a = 8, b = 11, and c = 15?

Complete the table for different values of x in the polynomial expression -7x2 + 32x + 240. then, determine the optimal price that the taco truck should sell its tacos for. assume whole dollar amounts for the tacos.

Afactory makes propeller drive shafts for ships. a quality assurance engineer at the factory needs to estimate the true mean length of the shafts. she randomly selects four drive shafts made at the factory, measures their lengths, and finds their sample mean to be 1000 mm. the lengths are known to follow a normal distribution whose standard deviation is 2 mm. calculate a 95% confidence interval for the true mean length of the shafts. input your answers for the margin of error, lower bound, and upper bound.