What is the first term in the sequence for which d=-2 and a7= 3?
a. -6
c. 15
b. 12
d -12

In the field of thermodynamics, rankine is the unit used to measure temperature. one can convert temperature from celsius into rankine using the formula , what is the temperature in celsius corresponding to r degrees rankine? a. 9/5(c - 273) b. 9/5(c + 273) c. 5/9( c - 273) d. 5/9( c + 273)

What percent of 18 is 24? and plz explain thx.

7x^2-9x+5=0 find the discriminant and number of real solutions