If j = k, then j + 9 = k + 9 represents which algebraic property
a. additive identity
b. additive inverse
c. addition property of equality
d. associative property of addition
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Acable company wants to provide cell phone service for residents on an island. the function for the cost of laying the cable from the island to the mainland is c(x)= 6.500 square root x2+4, where x represents the length of the cable in feet. what are the domain and range of the function? a) domain: all real numbers range: all real numbers greater than or equal to 17,000 b) domain: all real numbers greater than or equal to 0 range: all real numbers greater than or equal to 17,000 c) domain: all real numbers greater than or equal to 0 range: all real numbers greater than or equal to 13,000 d) domain: all real numbers greater than or equal to 13,000 range: all real numbers greater than or equal to 0

Write numerical coefficient of y² in the expression 2x² - 15xy – 7y²

Sara made $253 for 11 hours of work. at the same rate how much would he make for 7 hours of work?