You spent z dollars today. today, you spent 5.5 times as many dollars as you spent yesterday. which expression correctly shows how much you spent yesterday?

Which of these statements is correct? the system of linear equations 6x - 5y = 8 and 12x - 10y = 16 has no solution. the system of linear equations 7x + 2y = 6 and 14x + 4y = 16 has an infinite number of solutions. the system of linear equations 8x - 3y = 10 and 16x - 6y = 22 has no solution. the system of linear equations 9x + 6y = 14 and 18x + 12y = 26 has an infinite number of solutions.

If f(x)=3 over x+2 - square root x-3 then f(7)=

How many zeroes do we write when we write all the integers 1 to 243 in base 3?