When the last digit of a number is 5 and higher, it is rounded (or estimated) to be higher. Therefore since 7 is more than 5 you can round it to 10. 289 can be rounded to 290 or if 0s are more appealing then 300
According to the definition of a function, since every element in the domain should be mapped to a single element in the codomain, the output of -2 should be either 2 or -1 but not both.
Note that the other elements in the domain have unique images.
So, to make the mapping a function, we need to remove (-2, 2) or (-2, -1).
Of these, (-2, -1) is only given in the options.
Hence, the ordered pair to be removed is (-2, -1).
Answer:
89
Step-by-step explanation:
92 - 3 =89
subtract smallest from largest
Let be x the number that Ben thought of, and write the equation:
x/2 + x/4 = 60
Solve for x:
3x/4 = 60
3x = 60*4
x = 240/3
x = 80
Ben thought 80.
Answer: -3n-2.
Because for the first term, for example, plug in 1, you'll get -3(1)-2=-3-2=-5, which is the first one. Try it with all terms.