Is there answers on there ?
The upper left and bottom right are functions.
Remember a function has to pass the vertical line test. Elements from the domain cannot repeat, but elements from the range can.
7(a - 10) = 13 - 2(2a + 3)
7a - 70 = 13 - 4a - 6 = 7 - 4a
7a + 4a = 7 + 70
11a = 77
a = 77/11 = 7
a = 7.
Answer: 18.68
Step-by-step explanation:
