Solve and check the equation.-7y + 9 = 10 + 4y

Solve and check the equation.x – 8 = 17

The principal P is borrowed at simple interest rate r for a period of time t. Find the simple interest owed for the use of the money. Assume 360 days in a year and round answer to the nearest cent.P = $4000r = 6%t = 1 year

Solve the inequality and graph the solution set.8x – 3 ≥ 5x + 3

Evaluate the function at the given values of the variable.f(x) = x – 2a. f(6)b. f(-8)

Solve.A country is made up of four regions A, B, C, and D. The population of each region, in thousands, is given in the following table.According to the country’s constitution, the congress will have 30 seats, divided among the four regions according to their respective populations.(a) Find the standard divisor , in thousands.(b) How many people are there for each seat in the congress?

Regarding pour point, a refrigeration lubricant should be selected based on a system’s _____. 

A refrigeration lubricant with a high _____ point may have excessive wax separation, which can clog the system. 

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